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A survey of electron Bernstein wave heating and current drive potential for spherical tokamaks
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SYSNO ASEP 0362721 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A survey of electron Bernstein wave heating and current drive potential for spherical tokamaks Author(s) Urban, Jakub (UFP-V) RID
Decker, J. (FR)
Peysson, Y. (FR)
Preinhaelter, Josef (UFP-V) RID
Shevchenko, V. (GB)
Taylor, G. (US)
Vahala, L. (US)
Vahala, G. (US)Source Title Nuclear Fusion. - : Institute of Physics Publishing - ISSN 0029-5515
Roč. 51, č. 8 (2011), 083050-083050Number of pages 15 s. Publication form web - web Language eng - English Country AT - Austria Keywords spherical tokamak ; electron Bernstein wave (EBW) ; heating ; current drive ; electron cyclotron wave Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GA202/08/0419 GA ČR - Czech Science Foundation (CSF) 7G10072 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z20430508 - UFP-V (2005-2011) UT WOS 000294729400051 DOI 10.1088/0029-5515/51/8/083050 Annotation The electron Bernstein wave (EBW) is typically the only wave in the electron cyclotron (EC) range that can be applied in spherical tokamaks for heating and current drive (H&CD). Spherical tokamaks (STs) operate generally in high-β regimes, in which the usual EC O- and X-modes are cut off. In this case, EBWs seem to be the only option that can provide features similar to the EC waves—controllable localized H&CD that can be used for core plasma heating as well as for accurate plasma stabilization. The EBW is a quasi-electrostatic wave that can be excited by mode conversion from a suitably launched O- or X-mode; its propagation further inside the plasma is strongly influenced by the plasma parameters. These rather awkward properties make its application somewhat more difficult. In this paper we perform an extensive numerical study of EBW H&CD performance in four typical ST plasmas (NSTX L- and H-mode, MAST Upgrade, NHTX). Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2012
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